Demountable rim.



E. F CILQLi/W.`

DEMOUNT'ABL RIM. APPLICAHQN man APR. 21, 1915.

Patented May 16, 1916.

6 9. if??? I @warming AE izaozisa P. CALVIN, 0F

SARDINIA, OHIO, ASSIGNOR OF ONE-TENTH T0 WALTER W. MASTERS, OF INDIANAPOLIS, INDIANA.

DEMO'UNTABLE RIM.

Specification of Letters Patent.

.lipplication filed April 27, 1915. Serial No. 24,309.

To all 'ic/10m 'it may concern i le it known that fl, Etnica P. CALvix, a

citizen of the United Qitatcs.y residing at Sardinia, in the countyof llrown and State of Ohio, have invented new and useful Ima novel relation to thel fixed rim, combinedV with means of novel construction and arrangement for locking the detachable rim on the xed rim7 the locking means being of such a natureas to enable they detachable rini to be wedged int-o place on. the ixednrim and to be wedged vout of place thereon, thereby greatly facilitating the mounting and deinounting of the detachable rim. v

One of the chief objects of this invention is to provide a demountable riin so combined with the wheel and the fixed rim thereof that the said demountable rini may be detachedV from the wheel and replaced thereon in a very short space of time as compared with the deinountable rims now in use which require on the ave ager about teuf minutes to remove and as many minutes to replace, whereas nnderthe present invention, a dem'ountable rim may be removed in less than' a minute and replaced just as quickly.

lV ith the above and other objects in view,

the invention consists of the novel features l of construction7 combination and arrangement of parts hereinafter, described land claimed, reference bev had to th( panying drawings, in which:

Figure l is a side elevation. partly in section, showing' a wheel felly. the relation of the fixed and detachable rinis thereto, thev locking ring` and the operating means for the latter; Fig. i). is al cross section on thcv line 2-2 of Fig. l; Fig. l is a cross section on the line Cil-: of Fig. 1; Fig. l is a fragment-aia' perspective vicw of the locking ring; Fig. is a .fragmentary perspective view of the fixed. rim: Fig. (3 is a, longitudinal or -circniuferential section on the 'line G-6 of Fig. il. i

Referring to the drawings, lA designates a wheel felly -aiid 2 a fixed riin composed of metal, surrounding the telly .l `and securely fastened thereto. The fixed run 2 is proas will hereinafter appear.

v`ing therefrom.

vided along one of its n'iai'ginal edges -with an inwardly extending flange Il formed at intei 'als with open notches l1 which also cxtcud into the body portion o'l' the rilu 2 as shown inFig. 5i A\longits opposite cdge the riin 2 is provided with an outwardlyextending` annular flange against which thi` detachable riln is positioned when in place,

designates a flange or ring securedl to thil opposite side oli* the felly, against which the yflange 5 abuts, as shown in Figs. 2 and 2".

The tire-carrying riin indicated at 7 is shown as provided with the usual pair of clencher ianges S and also provided at one side with an inwardly extending annular flange l) which conceals the locking mechanism t0 be hereinafter described. The riin T is also provided at suitable intervals with uiwardly extending lugs l() having` as shown in Fig. @opposite-ly inclined wedging faces ll and l2 which cooperate with a locking ring 13 arranged in a rabbet or recess 1i in the felly l, said ringybeing adapted to be turned for'a limited distance inA opposite directions andA beingpprovided with wedging faces 15-and other wedging faces lo. tht` edging faces l5 being formed at the extremities of circuinferentially elongated tongues 17 which serve to close the slots or notches l to prevent the lugs l0 from escap- There are as many wedgiiig faces 15 and i6 as there are lugs l() and notches l in order that all of the lugs l1() may be simultaneously engaged and securely held in a fixed position.

The means Yl'or'l'nirtially turning thev loching ringll embodies a rack face 1S on the ring lil and in conjunction therewith a pin.- ion lfl fast on a pinion shaft itk said lshaft projecting at one side of the fclly 1 a-nd beyond the flange il where it is squared in cross section to receive a suitable hey, by means ol' which the shaft and pinion may be turned in .order to impart a corresponding. turning pinion shaft 2() is shown in Figj. as jour-V naled in a m'etal bearing plate 22, thereby increasing the lite and dural.. ty of he loch'- ing niechanism.

n operation the detachable rim 7 containatented May 16, 191G- in the felly 1.

ing the tire is slipped laterally over and upon the fixed rim 2 so that the lugs 10 will enter the notches 1 and at the same time pass between the wedging faces 15 and 16 of the locking ring. Then, by means of the rack and pinion mechanism, the ring is turned to the position shown in Fig. 6, the tongues 17 then crossing the notches or slots 4 and preventing the escape of the lugs 10. To detach the rim 7, the operation just described is reversed, permitting the lugsto be moved outwardlyin the notches 4 and in the movement of the ring 13 toward its releasing position, the wedging faces 16 op-r erate against the inner sides of the lugs 10 and crowd or Wedge the detachable rim laterally and partially off the Afixed rim. In order to prevent any possibility of the detachable rim and the locking ring working loose, said ring 13 is provided with a ratchet face 23 which is engaged by a spring detent 24 having attached thereto a stern 25 on which is mounted a head 26 slidable on the stern 25 and having a shank 27 which is oblong in cross Section and which is adapted to fit 4into a recess 28 ofcorresponding shape By sliding the head 26 against a stop shoulder 29 at the inner extremity of the stem 25, the detent 2l may be moved out of engagement with the ratchet face 23. and b v giving the head 26 a quarter turn, the ,inner end of the shank 2 rests against the inner face of the felly 1 and holds the detent 2l out of engagement with the ratchet face 23 during the operation .of demounting the rim 7.

The demountable rim, together with the locking and wedging means hereinabove described is of simple, durable, and practical construction and eliminates many of the objectionable features present in many of (tlhe demountable rims in use at the present ay.

Having thus described my invention, l claim:

1. The combination with the felly ofa vehicle wheel, of a fixed. rim fast thereon and formed with open lug-receiving notches in one side edge thereof, a detachable tirecarrying rim surrounding said fixed rim and having lugs on its inner face entering said notches, having their inner and outer .faces both oblique and parallel, a wedging andlocking ring having two sets of we( ging faces to engage the opposite oblique faces of said lugs, one set acting to press the detachable rim on and the other set acting to press said rim off the fixed rim, means for limiting the movement of the demountable rimtowai the inside of the wheel, and means for turning said ring.

2. The combination with a felly of a vchicle wheel, of a fixed rim fast thereon and formed with open lug-receiving notches in one side edge thereof, a detachable tire-carrying rim surrounding said fixed rim and having lugs on its inner face entering said notches, having their inner and outer faces both. oblique and parallel, a wedging and locking ring having two sets of wedging faces to engage the opposite oblique faces-of said lugs, one set acting to press the detachl able rim on and the other set acting,r to press said rim off the fixed rim. means for limiting' the movement of the demountable rim toward the inside of the wheel. means for turning said ring. and a manually displace-- able detent to prevent said ring from accidental turning.

ln testimony whereof l allix my signature in presence of two witnesses.

ELM ER P. C). LVIN.

Witnesses z JAMES A. honi-u., BENNETT S. Joxi-xs. 

